/Engine/Source/Editor/ViewportInteraction/Public/VIGizmoHandle.h
Adds the HandleMeshComponent to the Handles list
void AddMeshToHandles ( class [UGizmoHandleMeshComponent](API\Editor\ViewportInteraction\UGizmoHandleMeshComponent) * HandleMeshComponent, const [FTransformGizmoHandlePlacement](API\Editor\ViewportInteraction\FTransformGizmoHandlePlacement) & HandlePlacement )